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MANDATORILY REDEEMABLE NONCONTROLLING INTEREST (ROLLFORWARD TABLE) (DETAILS) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mandatorily redeemable noncontrolling interest [Line Items]    
Mandatorily redeemable noncontrolling interest, January 1 $ 2,509  
Net income attributable to mandatorily redeemable noncontrolling interest 21,303 18,603
Change in redemption value 175  
Mandatorily redeemable noncontrolling interest, March 31 2,462  
Iknowtion [Member]
   
Mandatorily redeemable noncontrolling interest [Line Items]    
Mandatorily redeemable noncontrolling interest, January 1 2,509 1,067
Net income attributable to mandatorily redeemable noncontrolling interest 128 41
Change in redemption value (175)  
Mandatorily redeemable noncontrolling interest, March 31 $ 2,462 $ 1,108